vue+elementUI完成注册及登陆

原创已于 2022-05-05 17:16:23 修改 · 9k 阅读

42 ·

CC 4.0 BY-SA版权

文章标签：

#vue.js #elementui #javascript

于 2022-05-05 16:41:28 首次发布

本文介绍了如何使用Vue.js结合ElementUI框架搭建注册和登录页面，详细阐述了Vue项目中引入和配置ElementUI的步骤，以及如何通过axios进行后台交互。在axios的使用中，讨论了跨域问题的解决方法，并引入qs库处理POST请求的数据格式问题，以确保后台能够正确接收数据。最后展示了简化后的axios和vue-axios配置，以及登录功能的实现方法。

1. vue怎么引入和配置使用element-ui框架
1.1 使用vue-cli脚手架工具创建一个vue项目
vue init webpack pro01

1.2 npm安装elementUI
cd pro01 #进入新建项目的根目录
npm install element-ui -S #安装element-ui模块
1.3 在项目中src目录下找到main.js，并在指定位置添加三行代码（main.js是入口文件，所以在这里引入就行，页面就不用引入了）

2，创建登录注册页面，更改样式
3. 后台交互(axios/qs/vue-axios)

3.1 axios
axios是vue2提倡使用的轻量版的ajax。它是基于promise的HTTP库。它会从浏览器中创建XMLHttpRequests，与Vue配合使用非常好。

3.2 导入axios

然后重新启动项目（npm run dev）

把axios导入登录页面中

定义请求路径和参数

2.GET提交
      axios.get('/user', {//注意数据是保存到json对象的params属性
        params: {
          ID: 12345
        }
      }).then(function (response) {
        console.log(response);
      }).catch(function (error) {
        console.log(error);
      });

3.POST提交
      axios.post('/user', {//注意数据是直接保存到json对象
        firstName: 'Fred',
        lastName: 'Flintstone'
      }).then(function (response) {
        console.log(response);
      }).catch(function (error) {
        console.log(error);
      });

注1：axios跨域问题，因为使用了前后端分离开发，跨域访问了，解决方案：需要配置tomcat允许跨域访问，
tomcat跨域配置方法很多，但最简单的方式是自己写一个过滤器CorsFilter实现，添加一个响应头

GET提交

设置提示框

注2：axios.get提交没有问题，axios.post提交后台接收不到数据
因为POST提交的参数的格式是Request Payload，这样后台取不到数据的，解决方案：使用qs.js库，将{a:'b',c:'d'}转换成'a=b&c=d'

POST提交

下载qs进行参数转换

导入qs

将参数进行转换

拼接式

简化axios/qs/vue-axios安装及使用步骤

复制两个请求地址

2.修改main.js文件

import axios from '@/api/http' #vue项目对axios的全局配置
mport VueAxios from 'vue-axios'
Vue.use(VueAxios,axios)

login就可以不用引入了

简化后的POST

也是可以的

简化后的GET

可以查看请求方式

<template>
  <div class="login-wrap">
    <el-form  class="login-container">
      <h1 class="title">用户登录</h1>
      <el-form-item>
        <el-input type="text" placeholder="用户账号" v-model="username" autocomplete="off"></el-input>
      </el-form-item>
      <el-form-item>
        <el-input type="password" placeholder="用户密码" v-model="password" autocomplete="off"></el-input>
      </el-form-item>
        <el-button type="primary" @click="doLogin" style="width: 100%;">登录</el-button>
        </el-form-item>
        <el-row style="text-align: center;margin-top: 5px;">
          <el-link type="primary" @click="toRegister">注册</el-link>
          <el-link type="primary">忘记密码</el-link>
        </el-row>
    </el-form>
  </div>
</template>

<script>
  /* import axios from 'axios'
  import qs from 'qs' */
  export default {
    name:'Login',
    data:function(){
      return {
        username:'',
        password:''
      }
    },
    methods: {
      doLogin:function(){
        let username=this.username;
        let password=this.password;
        console.log("username=%s,password=%s",username,password);
        //定义请求路径
        let url=this.axios.urls.SYSTEM_USER_DOLOGIN;  //  /userAction.action
        //定义请求参数
        let params={
          username:username,
          password:password,
          methodName:'userLogin'
        }
        console.log(params);
        //发起ajax请求-GET(注意参数必须保存到params属性中)
        this.axios.get(url,{params:params}).then(resp=>{
          console.log(resp);
          let data=resp.data;
          console.log(data);
            this.$message({
                      message: data.msg,
                      type: data.code==1?'success':'error'
                    });
        }).catch(err=>{
          console.log(err);
        });
        //发起ajax请求-POST
        //payload:{a:'zs','b':'123'} ---> a=zs&b=123
        /* let str=qs.stringify(params);
        console.log(str); */
        /* this.axios.post(url,params).then(resp=>{
          console.log(resp);
        }).catch(err=>{
          console.log(err);
        });*/
      },
      toRegister:function(){
        this.$router.push('/Register');
      }
    }
  }
</script>

<style>
  .login-wrap {
  		box-sizing: border-box;
  		width: 100%;
  		height: 100%;
  		padding-top: 10%;
  		background-image: url(data:image/svg+xml;base64,<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg width="1361px" height="609px" viewBox="0 0 1361 609" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <!-- Generator: Sketch 46.2 (44496) - http://www.bohemiancoding.com/sketch -->
    <title>Group 21</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="Ant-Design-Pro-3.0" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
        <g id="账户密码登录-校验" transform="translate(-79.000000, -82.000000)">
            <g id="Group-21" transform="translate(77.000000, 73.000000)">
                <g id="Group-18" opacity="0.8" transform="translate(74.901416, 569.699158) rotate(-7.000000) translate(-74.901416, -569.699158) translate(4.901416, 525.199158)">
                    <ellipse id="Oval-11" fill="#CFDAE6" opacity="0.25" cx="63.5748792" cy="32.468367" rx="21.7830479" ry="21.766008"></ellipse>
                    <ellipse id="Oval-3" fill="#CFDAE6" opacity="0.599999964" cx="5.98746479" cy="13.8668601" rx="5.2173913" ry="5.21330997"></ellipse>
                    <path d="M38.1354514,88.3520215 C43.8984227,88.3520215 48.570234,83.6838647 48.570234,77.9254015 C48.570234,72.1669383 43.8984227,67.4987816 38.1354514,67.4987816 C32.3724801,67.4987816 27.7006688,72.1669383 27.7006688,77.9254015 C27.7006688,83.6838647 32.3724801,88.3520215 38.1354514,88.3520215 Z" id="Oval-3-Copy" fill="#CFDAE6" opacity="0.45"></path>
                    <path d="M64.2775582,33.1704963 L119.185836,16.5654915" id="Path-12" stroke="#CFDAE6" stroke-width="1.73913043" stroke-linecap="round" stroke-linejoin="round"></path>
                    <path d="M42.1431708,26.5002681 L7.71190162,14.5640702" id="Path-16" stroke="#E0B4B7" stroke-width="0.702678964" opacity="0.7" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="1.405357899873153,2.108036953469981"></path>
                    <path d="M63.9262187,33.521561 L43.6721326,69.3250951" id="Path-15" stroke="#BACAD9" stroke-width="0.702678964" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="1.405357899873153,2.108036953469981"></path>
                    <g id="Group-17" transform="translate(126.850922, 13.543654) rotate(30.000000) translate(-126.850922, -13.543654) translate(117.285705, 4.381889)" fill="#CFDAE6">
                        <ellipse id="Oval-4" opacity="0.45" cx="9.13482653" cy="9.12768076" rx="9.13482653" ry="9.12768076"></ellipse>
                        <path d="M18.2696531,18.2553615 C18.2696531,13.2142826 14.1798519,9.12768076 9.13482653,9.12768076 C4.08980114,9.12768076 0,13.2142826 0,18.2553615 L18.2696531,18.2553615 Z" id="Oval-4" transform="translate(9.134827, 13.691521) scale(-1, -1) translate(-9.134827, -13.691521) "></path>
                    </g>
                </g>
                <g id="Group-14" transform="translate(216.294700, 123.725600) rotate(-5.000000) translate(-216.294700, -123.725600) translate(106.294700, 35.225600)">
                    <ellipse id="Oval-2" fill="#CFDAE6" opacity="0.25" cx="29.1176471" cy="29.1402439" rx="29.1176471" ry="29.1402439"></ellipse>
                    <ellipse id="Oval-2" fill="#CFDAE6" opacity="0.3" cx="29.1176471" cy="29.1402439" rx="21.5686275" ry="21.5853659"></ellipse>
                    <ellipse id="Oval-2-Copy" stroke="#CFDAE6" opacity="0.4" cx="179.019608" cy="138.146341" rx="23.7254902" ry="23.7439024"></ellipse>
                    <ellipse id="Oval-2" fill="#BACAD9" opacity="0.5" cx="29.1176471" cy="29.1402439" rx="10.7843137" ry="10.7926829"></ellipse>
                    <path d="M29.1176471,39.9329268 L29.1176471,18.347561 C23.1616351,18.347561 18.3333333,23.1796097 18.3333333,29.1402439 C18.3333333,35.1008781 23.1616351,39.9329268 29.1176471,39.9329268 Z" id="Oval-2" fill="#BACAD9"></path>
                    <g id="Group-9" opacity="0.45" transform="translate(172.000000, 131.000000)" fill="#E6A1A6">
                        <ellipse id="Oval-2-Copy-2" cx="7.01960784" cy="7.14634146" rx="6.47058824" ry="6.47560976"></ellipse>
                        <path d="M0.549019608,13.6219512 C4.12262681,13.6219512 7.01960784,10.722722 7.01960784,7.14634146 C7.01960784,3.56996095 4.12262681,0.670731707 0.549019608,0.670731707 L0.549019608,13.6219512 Z" id="Oval-2-Copy-2" transform="translate(3.784314, 7.146341) scale(-1, 1) translate(-3.784314, -7.146341) "></path>
                    </g>
                    <ellipse id="Oval-10" fill="#CFDAE6" cx="218.382353" cy="138.685976" rx="1.61764706" ry="1.61890244"></ellipse>
                    <ellipse id="Oval-10-Copy-2" fill="#E0B4B7" opacity="0.35" cx="179.558824" cy="175.381098" rx="1.61764706" ry="1.61890244"></ellipse>
                    <ellipse id="Oval-10-Copy" fill="#E0B4B7" opacity="0.35" cx="180.098039" cy="102.530488" rx="2.15686275" ry="2.15853659"></ellipse>
                    <path d="M28.9985381,29.9671598 L171.151018,132.876024" id="Path-11" stroke="#CFDAE6" opacity="0.8"></path>
                </g>
                <g id="Group-10" opacity="0.799999952" transform="translate(1054.100635, 36.659317) rotate(-11.000000) translate(-1054.100635, -36.659317) translate(1026.600635, 4.659317)">
                    <ellipse id="Oval-7" stroke="#CFDAE6" stroke-width="0.941176471" cx="43.8135593" cy="32" rx="11.1864407" ry="11.2941176"></ellipse>
                    <g id="Group-12" transform="translate(34.596774, 23.111111)" fill="#BACAD9">
                        <ellipse id="Oval-7" opacity="0.45" cx="9.18534718" cy="8.88888889" rx="8.47457627" ry="8.55614973"></ellipse>
                        <path d="M9.18534718,17.4450386 C13.8657264,17.4450386 17.6599235,13.6143199 17.6599235,8.88888889 C17.6599235,4.16345787 13.8657264,0.332739156 9.18534718,0.332739156 L9.18534718,17.4450386 Z" id="Oval-7"></path>
                    </g>
                    <path d="M34.6597385,24.809694 L5.71666084,4.76878945" id="Path-2" stroke="#CFDAE6" stroke-width="0.941176471"></path>
                    <ellipse id="Oval" stroke="#CFDAE6" stroke-width="0.941176471" cx="3.26271186" cy="3.29411765" rx="3.26271186" ry="3.29411765"></ellipse>
                    <ellipse id="Oval-Copy" fill="#F7E1AD" cx="2.79661017" cy="61.1764706" rx="2.79661017" ry="2.82352941"></ellipse>
                    <path d="M34.6312443,39.2922712 L5.06366663,59.785082" id="Path-10" stroke="#CFDAE6" stroke-width="0.941176471"></path>
                </g>
                <g id="Group-19" opacity="0.33" transform="translate(1282.537219, 446.502867) rotate(-10.000000) translate(-1282.537219, -446.502867) translate(1142.537219, 327.502867)">
                    <g id="Group-17" transform="translate(141.333539, 104.502742) rotate(275.000000) translate(-141.333539, -104.502742) translate(129.333539, 92.502742)" fill="#BACAD9">
                        <circle id="Oval-4" opacity="0.45" cx="11.6666667" cy="11.6666667" r="11.6666667"></circle>
                        <path d="M23.3333333,23.3333333 C23.3333333,16.8900113 18.1099887,11.6666667 11.6666667,11.6666667 C5.22334459,11.6666667 0,16.8900113 0,23.3333333 L23.3333333,23.3333333 Z" id="Oval-4" transform="translate(11.666667, 17.500000) scale(-1, -1) translate(-11.666667, -17.500000) "></path>
                    </g>
                    <circle id="Oval-5-Copy-6" fill="#CFDAE6" cx="201.833333" cy="87.5" r="5.83333333"></circle>
                    <path d="M143.5,88.8126685 L155.070501,17.6038544" id="Path-17" stroke="#BACAD9" stroke-width="1.16666667"></path>
                    <path d="M17.5,37.3333333 L127.466252,97.6449735" id="Path-18" stroke="#BACAD9" stroke-width="1.16666667"></path>
                    <polyline id="Path-19" stroke="#CFDAE6" stroke-width="1.16666667" points="143.902597 120.302281 174.935455 231.571342 38.5 147.510847 126.366941 110.833333"></polyline>
                    <path d="M159.833333,99.7453842 L195.416667,89.25" id="Path-20" stroke="#E0B4B7" stroke-width="1.16666667" opacity="0.6"></path>
                    <path d="M205.333333,82.1372105 L238.719406,36.1666667" id="Path-24" stroke="#BACAD9" stroke-width="1.16666667"></path>
                    <path d="M266.723424,132.231988 L207.083333,90.4166667" id="Path-25" stroke="#CFDAE6" stroke-width="1.16666667"></path>
                    <circle id="Oval-5" fill="#C1D1E0" cx="156.916667" cy="8.75" r="8.75"></circle>
                    <circle id="Oval-5-Copy-3" fill="#C1D1E0" cx="39.0833333" cy="148.75" r="5.25"></circle>
                    <circle id="Oval-5-Copy-2" fill-opacity="0.6" fill="#D1DEED" cx="8.75" cy="33.25" r="8.75"></circle>
                    <circle id="Oval-5-Copy-4" fill-opacity="0.6" fill="#D1DEED" cx="243.833333" cy="30.3333333" r="5.83333333"></circle>
                    <circle id="Oval-5-Copy-5" fill="#E0B4B7" cx="175.583333" cy="232.75" r="5.25"></circle>
                </g>
            </g>
        </g>
    </g>
</svg>);
  		/* background-color: #112346; */
  		background-repeat: no-repeat;
  		background-position: center right;
  		background-size: 100%;
  	}

  	.login-container {
  		border-radius: 10px;
  		margin: 0px auto;
  		width: 350px;
  		padding: 30px 35px 15px 35px;
  		background: #fff;
  		border: 1px solid #eaeaea;
  		text-align: left;
  		box-shadow: 0 0 20px 2px rgba(0, 0, 0, 0.1);
  	}

  	.title {
  		margin: 0px auto 40px auto;
  		text-align: center;
  		color: #505458;
  	}
</style>

连接数据库登录

1，写一个登录方法

package com.zking.vue.dao;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

import com.zking.vue.entity.User;
import com.zking.vue.util.CommonUtils;

public class UserDao extends BaseDao{
	
	public User userLogin(User user) {
		String sql="select * from t_user_vue where username='"+user.getUsername()+"' and password='"+user.getPassword()+"'";
		System.out.println(sql);
		@SuppressWarnings("unchecked")
		List<User> lst=super.executeQuery(sql, null, new CallBack<User>() {

			@Override
			public List<User> forEach(ResultSet rs) throws SQLException {
				return CommonUtils.toList(rs, User.class);
			}
			
		});
		if(lst!=null&&lst.size()!=0)
			return lst.get(0);
		else
		return null;
		
	}
}

2，调用方法

package com.zking.vue.action;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.zking.mvc.framework.DispatcherAction;
import com.zking.mvc.framework.ModelDriver;
import com.zking.vue.dao.UserDao;
import com.zking.vue.entity.User;

public class UserAction extends DispatcherAction implements ModelDriver<User> {
	private User user=new User();
	private UserDao userDao=new UserDao();
	private ObjectMapper mapper=new ObjectMapper();
	@Override
	public User getModel() {
		return user;
	}

	public String userLogin(HttpServletRequest req,HttpServletResponse resp) 
			throws ServletException,IOException{
		Map<String,Object> json=new HashMap<String,Object>();
		User us=userDao.userLogin(user);
		if(us!=null) {
			json.put("code","1");
			json.put("msg", "用户登录成功");
		}else {
			json.put("code", "-1");
			json.put("msg", "用户名或密码错误");
		}
		mapper.writeValue(resp.getOutputStream(),json);
		return null;
	}
}